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Endoplasmic reticulum-located PDAT1-2 from castor bean enhances hydroxy fatty acid accumulation in transgenic plants.
Plant Cell Physiol. 2011 Jun; 52(6):983-93.PC

Abstract

Ricinoleic acid (12-hydroxy-octadeca-9-enoic acid) is a major unusual fatty acid in castor oil. This hydroxy fatty acid is useful in industrial materials. This unusual fatty acid accumulates in triacylglycerol (TAG) in the seeds of the castor bean (Ricinus communis L.), even though it is synthesized in phospholipids, which indicates that the castor plant has an editing enzyme, which functions as a phospholipid:diacylglycerol acyltransferase (PDAT) that is specific to ricinoleic acid. Transgenic plants containing fatty acid Δ12-hydroxylase encoded by the castor bean FAH12 gene produce a limited amount of hydroxy fatty acid, a maximum of around 17% of TAGs present in Arabidopsis seeds, and this unusual fatty acid remains in phospholipids of cell membranes in seeds. Identification of ricinoleate-specific PDAT from castor bean and manipulation of the phospholipid editing system in transgenic plants will enhance accumulation of the hydroxy fatty acid in transgenic seeds. The castor plant has three PDAT genes; PDAT1-1 and PDAT2 are homologs of PDAT, which are commonly found in plants; however, PDAT1-2 is newly grouped as a castor bean-specific gene. PDAT1-2 is expressed in developing seeds and localized in the endoplasmic reticulum, similar to FAH12, indicating its involvement in conversion of ricinoleic acid into TAG. PDAT1-2 significantly enhances accumulation of total hydroxy fatty acid up to 25%, with a significant increase in castor-like oil, 2-OH TAG, in seeds of transgenic Arabidopsis, which is an identification of the key gene for oilseed engineering in production of unusual fatty acids.

Authors+Show Affiliations

Department of Agricultural Bio-resources, National Academy of Agricultural Science, Rural Development Administration, Suwon, Republic of Korea. hukim64@korea.krNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21659329

Citation

Kim, Hyun Uk, et al. "Endoplasmic Reticulum-located PDAT1-2 From Castor Bean Enhances Hydroxy Fatty Acid Accumulation in Transgenic Plants." Plant & Cell Physiology, vol. 52, no. 6, 2011, pp. 983-93.
Kim HU, Lee KR, Go YS, et al. Endoplasmic reticulum-located PDAT1-2 from castor bean enhances hydroxy fatty acid accumulation in transgenic plants. Plant Cell Physiol. 2011;52(6):983-93.
Kim, H. U., Lee, K. R., Go, Y. S., Jung, J. H., Suh, M. C., & Kim, J. B. (2011). Endoplasmic reticulum-located PDAT1-2 from castor bean enhances hydroxy fatty acid accumulation in transgenic plants. Plant & Cell Physiology, 52(6), 983-93. https://doi.org/10.1093/pcp/pcr051
Kim HU, et al. Endoplasmic Reticulum-located PDAT1-2 From Castor Bean Enhances Hydroxy Fatty Acid Accumulation in Transgenic Plants. Plant Cell Physiol. 2011;52(6):983-93. PubMed PMID: 21659329.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Endoplasmic reticulum-located PDAT1-2 from castor bean enhances hydroxy fatty acid accumulation in transgenic plants. AU - Kim,Hyun Uk, AU - Lee,Kyeong-Ryeol, AU - Go,Young Sam, AU - Jung,Jin Hee, AU - Suh,Mi-Chung, AU - Kim,Jong Bum, PY - 2011/6/11/entrez PY - 2011/6/11/pubmed PY - 2011/9/16/medline SP - 983 EP - 93 JF - Plant & cell physiology JO - Plant Cell Physiol VL - 52 IS - 6 N2 - Ricinoleic acid (12-hydroxy-octadeca-9-enoic acid) is a major unusual fatty acid in castor oil. This hydroxy fatty acid is useful in industrial materials. This unusual fatty acid accumulates in triacylglycerol (TAG) in the seeds of the castor bean (Ricinus communis L.), even though it is synthesized in phospholipids, which indicates that the castor plant has an editing enzyme, which functions as a phospholipid:diacylglycerol acyltransferase (PDAT) that is specific to ricinoleic acid. Transgenic plants containing fatty acid Δ12-hydroxylase encoded by the castor bean FAH12 gene produce a limited amount of hydroxy fatty acid, a maximum of around 17% of TAGs present in Arabidopsis seeds, and this unusual fatty acid remains in phospholipids of cell membranes in seeds. Identification of ricinoleate-specific PDAT from castor bean and manipulation of the phospholipid editing system in transgenic plants will enhance accumulation of the hydroxy fatty acid in transgenic seeds. The castor plant has three PDAT genes; PDAT1-1 and PDAT2 are homologs of PDAT, which are commonly found in plants; however, PDAT1-2 is newly grouped as a castor bean-specific gene. PDAT1-2 is expressed in developing seeds and localized in the endoplasmic reticulum, similar to FAH12, indicating its involvement in conversion of ricinoleic acid into TAG. PDAT1-2 significantly enhances accumulation of total hydroxy fatty acid up to 25%, with a significant increase in castor-like oil, 2-OH TAG, in seeds of transgenic Arabidopsis, which is an identification of the key gene for oilseed engineering in production of unusual fatty acids. SN - 1471-9053 UR - https://www.unboundmedicine.com/medline/citation/21659329/Endoplasmic_reticulum_located_PDAT1_2_from_castor_bean_enhances_hydroxy_fatty_acid_accumulation_in_transgenic_plants_ L2 - https://academic.oup.com/pcp/article-lookup/doi/10.1093/pcp/pcr051 DB - PRIME DP - Unbound Medicine ER -